diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index b4eaa91..c490f2b 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -439,6 +439,10 @@ module ApplicationHelper
         parsed << full_tag
       end
     end
+    # Close any non closing tags
+    while tag = tags.pop
+      parsed << "</#{tag}>"
+    end
     parsed
   end
   
diff --git a/test/unit/helpers/application_helper_test.rb b/test/unit/helpers/application_helper_test.rb
index 011df82..11bbe90 100644
--- a/test/unit/helpers/application_helper_test.rb
+++ b/test/unit/helpers/application_helper_test.rb
@@ -324,6 +324,20 @@ EXPECTED
     assert_equal expected.gsub(%r{[\r\n\t]}, ''), textilizable(raw).gsub(%r{[\r\n\t]}, '')
   end
   
+  def test_non_closing_pre_blocks_should_be_closed
+    raw = <<-RAW
+<pre><code>
+RAW
+
+    expected = <<-EXPECTED
+<pre><code>
+</code></pre>
+EXPECTED
+                                 
+    @project = Project.find(1)
+    assert_equal expected.gsub(%r{[\r\n\t]}, ''), textilizable(raw).gsub(%r{[\r\n\t]}, '')
+  end
+  
   def test_syntax_highlight
     raw = <<-RAW
 <pre><code class="ruby">